Diodes Incorporated
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Small Plastic Package, Quad SPDT Analog Switch

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Product Description

The PI3A412 is a quad single-pole double throw (SPDT) CMOS switch. It can be used as an analog switch or as a low-delay bus switch. Specified over a wide operating power supply voltage, 1.8V to 4.2V, the PI3A412 has an On-Resistance of 0.5Ω at +4.2V. Control inputs(Ax) are independent of supply voltage.


  • CMOS Technology for Bus and Analog Applications
  • Low On-Resistance: 0.5Ω
  • Wide VDD Range: 1.8V to 4.2V
  • Rail-to-Rail Signal Range
  • High Off Isolation: -83dB @ 100kHz
  • Channel-to-Channel Crosstalk Rejection: -97dB @ 100kHz
  • Break-Before-Make Switching
  • Extended Industrial Temperature Range: -40°C to 85°C
  • ESD protection: 4kV(HBM)
  • Packaging (Pb-free & Green): 16-PinTQFN 3x3 (ZH16)


  • Cell Phones
  • PDAs
  • MP3 Players
  • Portable Instrumentation
  • Computer Peripherals
  • Speaker Headset Switching
  • Power Routing
  • Relay Replacement
  • Audio and Video Signal Routing
  • PCMCIA Cards
  • Modems

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Configuration 4-Channel SPDT
Differential Channels N/A
HotInsertion 1
Lanes N/A
OtherFeatures N/A
RailToRail 0
Signal Type Single Ended
Single Ended Channels 4
Voltage 3.3

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change